Help please

Permutations Ms. Glenn uses a calculator program to select students This question is assessing whether you've met the at random to answer questions in class. following Success Criteria: - Calculate the number of permutations. There are 15 students. - Use permutation notation. 2. a) In how many ways can the program select 5 T X different students students to answer five questions? 25 Edit my response 15 19 13 12 11 2. b) How would you write that in Permutation notation? Choice 1 Choice 2 Choice 3 Choice 4 Choice 5 OnPr (5,15) O nPr (5,5) OnPr( 15,5) OnPr ( 15,15)